Trolley-conductor hanger.



H. P. DAVIS. TROLLEY CONDUCTOR HANGER.

APPLICATION FILED DEO.14,1908.

931,393. Patented Aug. 17, 1909.

2 SHEETS-SHEET 1.

VENTOB I/IBY v 7 ATTORNEY H. P. DAVIS.

TBOLLEY CONDUCTOR HANGER.

APPLICATION FILED DEG. 14, 1908. 931,393, x Patented Aug. 17, 1909.

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Y I WITNESSES: a i B 6 S ATTORNEY To all whom it may concern:

HARRY P. DAVIS, OF P ITTSBUR G PENNSYLVA NI A, ASSIGNOR TO WESTINGHOUSE ELECTRIC 8: MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

TRoLLEY-ooNDUcToR HANGER.

Be it known that I, HARRY P. DAVIS, a

v citizen of the United States, and a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Trolley- Conductor Hangers, of which the following isa specification.

y invention relates to overhead line structures for electric railways, and it has for its object to provide an improved derice forsuspending a trolley conductor from a messenger wire or cable, whereby a greater degree of relative movement is permitted between the trolley conductor and the messenger cable than in devices heretofore used. In my copending application, filed April 10, 1908, Serial No. 426,288, I have..illustrated and described an improved trolley hanger which permits a limited vertical and longitudinal movement of the trolley wire but prevents a lateral movement of the wire relative to the messenger cable. This device is especially adapted for use with a grooved trolley conductor, portions of which usually have a tendency to twist.

Accordin to my present invention, I have provided a trolley clamp and hanger, which are specially adapted to grip and support a trolley conductor of circular cross section without preventingits limited movement in any direction, the arrangement of arts being such that the trolley wire may e l:eadily suspended without tendency to kin My trolley clam and hanger may, of course, be employed or suspending a grooved trolley wire and I do not wish to limit its use to any specific form of conductor.

Figure 1 of the accompanying drawings is an end elevation and Fig. 2 a side elevation of a trolley clamp and hanger constructed in accordance with my invention. Figs. 3 and '4 are, respectively, an end elevation and a a messenger wire or cable by means of my im roved trolley hangers.

fieferrin to Figs. 1 and 2 of the drawin s, the device here illustrated comprises a looped hanger rod 1, a trolley clamp 2 and a cable clamp 3. The cable clamp comprises aloop 4 which surrounds the cable 5 Specification of Letters Patent.

Application filed December 14, 1908. Serial No..467,481.

Patented Aug. 17, 1909.

clamped in position by means of a bolt 7.'

The trolley clamp 2 consists of two arts, 8 and 9, having claws 10 and '11 which are adapted to grip a trolley conductor 12, when the two parts are clamped together by binding screws 13. The. body of the assembled clamp is in the form of a loop which is linked with a loop 14 formed by the hanger rod 1. The loop 14 is so formed as to permit a considerable longitudinal movement of the trolley conductor 12, relative to the messenger cable 5, while the vertical and lateral movements of the trolley conductor are limited by the loop formed by. the clamp.

In suspending a trolley conductor from a. messenger cable by meansof my improved hangers, the trolley conductor should be first suspended in such a way that it is free to assume a position in which it does not tend to twist in any portion. 'The clamps 2 are then so secured to the wire as to project upwardly therefrom and the hanger rod is joined to the messenger cable so that it tends to hang in a vertical plane. The

weight of the trolley conductor is then relied upon to maintain a suitable: relation between the Wire and the cable, and substantially the same results may be secured with less expense than are secured by the use of a construction in which an auxiliary wire is suspended from the messenger cable in a line substantially parallel to the trolley conductor and slightly above it.

Referring to Figs. 3 and 4, which correspond to Figs. 1 and 2, the trolley clamp here illustrated comprises a pair of jaw members 15 and 16, which are adapted to grip a trolley conductor when they are clamped together byscrews 17. The jaw members are provided with extensions 18 and 19, which are substantially parallel to each other and are of sufiicient length to .be engaged by the upper half of the loop 14 with which the hanger rod is provided. Lateral projections 20 and 21 on the shanks of the jaw members are forced into engagement with each other when the' clamp is assembled and serve to complete the loop by which thf,1 trolley clamp is linked with the hanger r0 1.

While the trolley conductor may be suspended from the messenger cable by means of a series of hangers, all of which are constructed as shownin Fi s. 1 and 2, it may .be found desirable to utilize, at intervals, a

clamps of Figs. 3 and at are separated by a plurality of clamps similar to those in Figs. 1 and 2.

The proportlOn oftrolley clamps having the guide projections or extensions will deend upon thetwisting tendencies exhibited y the trolley conductor. For example, if

a grooved conductor is employed, it will probably be found desirable to employ more of the clamps having the guide projections than will be found necessary in case a con- ,ductor of circular cross sectlon is employed.-

It will be understood that variations in size and arrangement of parts may be effected within the spirit and scope of my invention; a

I claim asany invention: I

1. A hanger comprising a messenger-cable clamp, a trolley conductor clamp and a. hanger rod suspended from said cable clamp and havinga loop disposed in the plane of saidclamps and loosely engaged by said trolley-conductor clamp. 1

shown 2. A hanger comprlslng a messenger-cable clamp, a trolley conductor clamp and a hanger rod suspended from said cable clamp and having an elongated loop disposed in the plane of said clamps and loosely engaged by said trolley-conductor clamp.

' 3. In an electric line structure, the combination with a-messenger wire or cable and a trolley conductor, of a cable clamp, a trolley conductor clamp conductor clamp comprising a pair of interchangeable jaw members having shanks-proj ecting therefrom toform a loop and a sum-g gle link pivotally secured to the cable clamp and interlinked with the trolley clamp.

4. In an electric line structure, the combie nation with a messenger vgireor cable and a trolleyconductqr of a cable clamp, a trolley homprising a pair of interchangeable jaw members having shanks projecting therefrom to form a loop and a single link pivotally secured to the cable clamp and interlinked with the trolley clamp, one end of said link being provided with a horizontally elongated loop.

5. In an electric line structure, the combi-. nation with a messenger wire or cable and a trolley conductor, of a plurality of hangers comprising interlinked members which permit limited vertical and unlimited lateral movements of the trolley conductor and a plurality of hangers comprising interlinked members provided with means for restricting lateral movements of the trolley 'con ductor relative to the messenger wire.

6. A hanger for electric lines comprising a l/Vitnesses:

CAROLINE E. SMYERS, BI'RNEY HINEs.

.HARRY P. DAVIS. 

